/*
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This file is part of Ext JS 4.2
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Copyright (c) 2011-2013 Sencha Inc
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Contact: http://www.sencha.com/contact
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GNU General Public License Usage
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This file may be used under the terms of the GNU General Public License version 3.0 as
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published by the Free Software Foundation and appearing in the file LICENSE included in the
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packaging of this file.
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Please review the following information to ensure the GNU General Public License version 3.0
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requirements will be met: http://www.gnu.org/copyleft/gpl.html.
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If you are unsure which license is appropriate for your use, please contact the sales department
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at http://www.sencha.com/contact.
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Build date: 2013-05-16 14:36:50 (f9be68accb407158ba2b1be2c226a6ce1f649314)
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*/
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/**
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* Plugin to add header resizing functionality to a HeaderContainer.
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* Always resizing header to the left of the splitter you are resizing.
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*/
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Ext.define('Ext.grid.plugin.HeaderResizer', {
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extend: 'Ext.AbstractPlugin',
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requires: ['Ext.dd.DragTracker', 'Ext.util.Region'],
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alias: 'plugin.gridheaderresizer',
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disabled: false,
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config: {
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/**
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* @cfg {Boolean} dynamic
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* True to resize on the fly rather than using a proxy marker.
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* @accessor
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*/
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dynamic: false
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},
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colHeaderCls: Ext.baseCSSPrefix + 'column-header',
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minColWidth: 40,
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maxColWidth: 1000,
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wResizeCursor: 'col-resize',
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eResizeCursor: 'col-resize',
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// not using w and e resize bc we are only ever resizing one
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// column
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//wResizeCursor: Ext.isWebKit ? 'w-resize' : 'col-resize',
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//eResizeCursor: Ext.isWebKit ? 'e-resize' : 'col-resize',
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init: function(headerCt) {
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this.headerCt = headerCt;
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headerCt.on('render', this.afterHeaderRender, this, {single: true});
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},
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/**
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* @private
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* AbstractComponent calls destroy on all its plugins at destroy time.
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*/
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destroy: function() {
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if (this.tracker) {
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this.tracker.destroy();
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}
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},
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afterHeaderRender: function() {
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var headerCt = this.headerCt,
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el = headerCt.el;
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headerCt.mon(el, 'mousemove', this.onHeaderCtMouseMove, this);
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this.tracker = new Ext.dd.DragTracker({
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disabled: this.disabled,
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onBeforeStart: Ext.Function.bind(this.onBeforeStart, this),
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onStart: Ext.Function.bind(this.onStart, this),
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onDrag: Ext.Function.bind(this.onDrag, this),
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onEnd: Ext.Function.bind(this.onEnd, this),
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tolerance: 3,
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autoStart: 300,
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el: el
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});
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},
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// As we mouse over individual headers, change the cursor to indicate
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// that resizing is available, and cache the resize target header for use
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// if/when they mousedown.
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onHeaderCtMouseMove: function(e, t) {
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var me = this,
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prevSiblings,
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headerEl, overHeader, resizeHeader, resizeHeaderOwnerGrid, ownerGrid;
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if (me.headerCt.dragging) {
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if (me.activeHd) {
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me.activeHd.el.dom.style.cursor = '';
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delete me.activeHd;
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}
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} else {
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headerEl = e.getTarget('.' + me.colHeaderCls, 3, true);
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if (headerEl){
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overHeader = Ext.getCmp(headerEl.id);
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// On left edge, go back to the previous non-hidden header.
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if (overHeader.isOnLeftEdge(e)) {
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resizeHeader = overHeader.previousNode('gridcolumn:not([hidden]):not([isGroupHeader])')
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// There may not *be* a previous non-hidden header.
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if (resizeHeader) {
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ownerGrid = me.headerCt.up('tablepanel');
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resizeHeaderOwnerGrid = resizeHeader.up('tablepanel');
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// Need to check that previousNode didn't go outside the current grid/tree
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// But in the case of a Grid which contains a locked and normal grid, allow previousNode to jump
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// from the first column of the normalGrid to the last column of the lockedGrid
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if (!((resizeHeaderOwnerGrid === ownerGrid) || ((ownerGrid.ownerCt.isXType('tablepanel')) && ownerGrid.ownerCt.view.lockedGrid === resizeHeaderOwnerGrid))) {
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resizeHeader = null;
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}
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}
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}
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// Else, if on the right edge, we're resizing the column we are over
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else if (overHeader.isOnRightEdge(e)) {
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resizeHeader = overHeader;
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}
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// Between the edges: we are not resizing
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else {
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resizeHeader = null;
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}
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// We *are* resizing
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if (resizeHeader) {
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// If we're attempting to resize a group header, that cannot be resized,
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// so find its last visible leaf header; Group headers are sized
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// by the size of their child headers.
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if (resizeHeader.isGroupHeader) {
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prevSiblings = resizeHeader.getGridColumns();
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resizeHeader = prevSiblings[prevSiblings.length - 1];
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}
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// Check if the header is resizable. Continue checking the old "fixed" property, bug also
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// check whether the resizable property is set to false.
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if (resizeHeader && !(resizeHeader.fixed || (resizeHeader.resizable === false) || me.disabled)) {
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me.activeHd = resizeHeader;
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overHeader.el.dom.style.cursor = me.eResizeCursor;
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if (overHeader.triggerEl) {
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overHeader.triggerEl.dom.style.cursor = me.eResizeCursor;
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}
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}
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// reset
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} else {
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overHeader.el.dom.style.cursor = '';
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if (overHeader.triggerEl) {
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overHeader.triggerEl.dom.style.cursor = '';
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}
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me.activeHd = null;
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}
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}
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}
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},
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// only start when there is an activeHd
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onBeforeStart : function(e) {
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// cache the activeHd because it will be cleared.
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this.dragHd = this.activeHd;
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if (!!this.dragHd && !this.headerCt.dragging) {
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this.tracker.constrainTo = this.getConstrainRegion();
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return true;
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} else {
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this.headerCt.dragging = false;
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return false;
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}
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},
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// get the region to constrain to, takes into account max and min col widths
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getConstrainRegion: function() {
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var me = this,
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dragHdEl = me.dragHd.el,
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rightAdjust = 0,
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nextHd,
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lockedGrid;
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// If forceFit, then right constraint is based upon not being able to force the next header
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// beyond the minColWidth. If there is no next header, then the header may not be expanded.
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if (me.headerCt.forceFit) {
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nextHd = me.dragHd.nextNode('gridcolumn:not([hidden]):not([isGroupHeader])');
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if (nextHd) {
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if (!me.headerInSameGrid(nextHd)) {
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nextHd = null;
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}
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rightAdjust = nextHd.getWidth() - me.minColWidth;
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}
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}
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// If resize header is in a locked grid, the maxWidth has to be 30px within the available locking grid's width
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else if ((lockedGrid = me.dragHd.up('tablepanel')).isLocked) {
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rightAdjust = me.dragHd.up('[scrollerOwner]').getWidth() - lockedGrid.getWidth() - 30;
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}
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// Else ue our default max width
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else {
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rightAdjust = me.maxColWidth - dragHdEl.getWidth();
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}
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return me.adjustConstrainRegion(
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dragHdEl.getRegion(),
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0,
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rightAdjust,
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0,
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me.minColWidth
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);
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},
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// initialize the left and right hand side markers around
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// the header that we are resizing
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onStart: function(e){
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var me = this,
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dragHd = me.dragHd,
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width = dragHd.el.getWidth(),
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headerCt = dragHd.getOwnerHeaderCt(),
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x, y, gridSection, markerOwner, lhsMarker, rhsMarker, markerHeight;
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me.headerCt.dragging = true;
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me.origWidth = width;
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// setup marker proxies
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if (!me.dynamic) {
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gridSection = markerOwner = headerCt.up('tablepanel');
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if (gridSection.ownerLockable) {
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markerOwner = gridSection.ownerLockable;
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}
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x = me.getLeftMarkerX(markerOwner);
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lhsMarker = markerOwner.getLhsMarker();
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rhsMarker = markerOwner.getRhsMarker();
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markerHeight = gridSection.body.getHeight() + headerCt.getHeight();
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y = headerCt.getOffsetsTo(markerOwner)[1];
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lhsMarker.setLocalY(y);
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rhsMarker.setLocalY(y);
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lhsMarker.setHeight(markerHeight);
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rhsMarker.setHeight(markerHeight);
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me.setMarkerX(lhsMarker, x);
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me.setMarkerX(rhsMarker, x + width);
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}
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},
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// synchronize the rhsMarker with the mouse movement
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onDrag: function(e){
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var me = this,
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markerOwner;
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if (me.dynamic) {
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me.doResize();
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} else {
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markerOwner = this.headerCt.up('tablepanel');
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if (markerOwner.ownerLockable) {
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markerOwner = markerOwner.ownerLockable;
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}
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this.setMarkerX(this.getMovingMarker(markerOwner), this.calculateDragX(markerOwner));
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}
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},
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getMovingMarker: function(markerOwner){
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return markerOwner.getRhsMarker();
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},
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onEnd: function(e) {
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this.headerCt.dragging = false;
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if (this.dragHd) {
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if (!this.dynamic) {
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var markerOwner = this.headerCt.up('tablepanel');
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// hide markers
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if (markerOwner.ownerLockable) {
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markerOwner = markerOwner.ownerLockable;
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}
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this.setMarkerX(markerOwner.getLhsMarker(), -9999);
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this.setMarkerX(markerOwner.getRhsMarker(), -9999);
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}
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this.doResize();
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}
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},
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doResize: function() {
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var me = this,
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dragHd = me.dragHd,
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nextHd,
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offset;
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if (dragHd) {
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offset = me.tracker.getOffset('point');
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// resize the dragHd
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if (dragHd.flex) {
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delete dragHd.flex;
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}
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Ext.suspendLayouts();
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// Set the new column width.
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me.adjustColumnWidth(offset[0]);
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// In the case of forceFit, change the following Header width.
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// Constraining so that neither neighbour can be sized to below minWidth is handled in getConstrainRegion
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if (me.headerCt.forceFit) {
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nextHd = dragHd.nextNode('gridcolumn:not([hidden]):not([isGroupHeader])');
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if (nextHd && !me.headerInSameGrid(nextHd)) {
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nextHd = null;
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}
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if (nextHd) {
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delete nextHd.flex;
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nextHd.setWidth(nextHd.getWidth() - offset[0]);
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}
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}
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// Apply the two width changes by laying out the owning HeaderContainer
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Ext.resumeLayouts(true);
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}
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},
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// nextNode can traverse out of this grid, possibly to others on the page, so limit it here
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headerInSameGrid: function(header) {
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var grid = this.dragHd.up('tablepanel');
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return !!header.up(grid);
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},
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disable: function() {
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this.disabled = true;
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if (this.tracker) {
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this.tracker.disable();
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}
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},
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enable: function() {
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this.disabled = false;
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if (this.tracker) {
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this.tracker.enable();
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}
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},
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calculateDragX: function(markerOwner) {
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return this.tracker.getXY('point')[0] - markerOwner.getX() - markerOwner.el.getBorderWidth('l');
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},
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getLeftMarkerX: function(markerOwner) {
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return this.dragHd.getX() - markerOwner.getX() - markerOwner.el.getBorderWidth('l') - 1;
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},
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setMarkerX: function(marker, x) {
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marker.setLocalX(x);
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},
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adjustConstrainRegion: function(region, t, r, b, l) {
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return region.adjust(t, r, b, l);
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},
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adjustColumnWidth: function(offsetX) {
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this.dragHd.setWidth(this.origWidth + offsetX);
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}
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});
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