345 lines
12 KiB
Vue
345 lines
12 KiB
Vue
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<template>
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<div :class="containerClass">
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<template v-for="(panel,i) of panels" :key="i" class="p-splitter-panel">
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<component :is="panel"></component>
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<div class="p-splitter-gutter" v-if="i !== (panels.length -1)" :style="gutterStyle"
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@mousedown="onGutterMouseDown($event, i)"
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@touchstart="onGutterTouchStart($event, i)"
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@touchmove="onGutterTouchMove($event, i)"
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@touchend="onGutterTouchEnd($event, i)">
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<div class="p-splitter-gutter-handle"></div>
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</div>
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</template>
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</div>
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</template>
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<script>
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import {DomHandler,ObjectUtils} from 'primevue/utils';
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export default {
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name: 'Splitter',
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emits: ['resizeend'],
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props: {
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layout: {
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type: String,
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default: 'horizontal'
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},
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gutterSize: {
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type: Number,
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default: 4
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},
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stateKey: {
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type: String,
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default: null
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},
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stateStorage: {
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type: String,
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default: 'session'
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}
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},
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dragging: false,
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mouseMoveListener: null,
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mouseUpListener: null,
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touchMoveListener: null,
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touchEndListener: null,
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size: null,
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gutterElement: null,
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startPos: null,
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prevPanelElement: null,
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nextPanelElement: null,
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nextPanelSize: null,
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prevPanelSize: null,
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panelSizes: null,
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prevPanelIndex: null,
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mounted() {
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if (this.panels && this.panels.length) {
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let initialized = false;
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if (this.isStateful()) {
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initialized = this.restoreState();
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}
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if (!initialized) {
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let children = [...this.$el.children].filter(child => DomHandler.hasClass(child, 'p-splitter-panel'));
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let _panelSizes = [];
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this.panels.map((panel, i) => {
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let panelInitialSize = panel.props && panel.props.size ? panel.props.size: null;
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let panelSize = panelInitialSize || (100 / this.panels.length);
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_panelSizes[i] = panelSize;
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children[i].style.flexBasis = 'calc(' + panelSize + '% - ' + ((this.panels.length - 1) * this.gutterSize) + 'px)';
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});
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this.panelSizes = _panelSizes;
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}
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}
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},
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beforeUnmount() {
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this.clear();
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this.unbindMouseListeners();
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},
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methods: {
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isSplitterPanel(child) {
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return child.type.name === 'SplitterPanel';
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},
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onResizeStart(event, index) {
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this.gutterElement = event.currentTarget;
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this.size = this.horizontal ? DomHandler.getWidth(this.$el) : DomHandler.getHeight(this.$el);
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this.dragging = true;
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this.startPos = this.layout === 'horizontal' ? (event.pageX || event.changedTouches[0].pageX) : (event.pageY || event.changedTouches[0].pageY);
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this.prevPanelElement = this.gutterElement.previousElementSibling;
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this.nextPanelElement = this.gutterElement.nextElementSibling;
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this.prevPanelSize = 100 * (this.horizontal ? DomHandler.getOuterWidth(this.prevPanelElement, true): DomHandler.getOuterHeight(this.prevPanelElement, true)) / this.size;
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this.nextPanelSize = 100 * (this.horizontal ? DomHandler.getOuterWidth(this.nextPanelElement, true): DomHandler.getOuterHeight(this.nextPanelElement, true)) / this.size;
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this.prevPanelIndex = index;
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DomHandler.addClass(this.gutterElement, 'p-splitter-gutter-resizing');
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DomHandler.addClass(this.$el, 'p-splitter-resizing');
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},
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onResize(event) {
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let newPos;
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if (this.horizontal)
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newPos = (event.pageX * 100 / this.size) - (this.startPos * 100 / this.size);
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else
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newPos = (event.pageY * 100 / this.size) - (this.startPos * 100 / this.size);
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let newPrevPanelSize = this.prevPanelSize + newPos;
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let newNextPanelSize = this.nextPanelSize - newPos;
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if (this.validateResize(newPrevPanelSize, newNextPanelSize)) {
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this.prevPanelElement.style.flexBasis = 'calc(' + newPrevPanelSize + '% - ' + ((this.panels.length - 1) * this.gutterSize) + 'px)';
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this.nextPanelElement.style.flexBasis = 'calc(' + newNextPanelSize + '% - ' + ((this.panels.length - 1) * this.gutterSize) + 'px)';
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this.panelSizes[this.prevPanelIndex] = newPrevPanelSize;
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this.panelSizes[this.prevPanelIndex + 1] = newNextPanelSize;
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}
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},
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onResizeEnd(event) {
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if (this.isStateful()) {
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this.saveState();
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}
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this.$emit('resizeend', {originalEvent: event, sizes: this.panelSizes});
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DomHandler.removeClass(this.gutterElement, 'p-splitter-gutter-resizing');
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DomHandler.removeClass(this.$el, 'p-splitter-resizing');
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this.clear();
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},
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onGutterMouseDown(event, index) {
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this.onResizeStart(event, index);
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this.bindMouseListeners();
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},
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onGutterTouchStart(event, index) {
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this.onResizeStart(event, index);
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this.bindTouchListeners();
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event.preventDefault();
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},
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onGutterTouchMove(event) {
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this.onResize(event);
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event.preventDefault();
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},
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onGutterTouchEnd(event) {
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this.onResizeEnd(event);
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this.unbindTouchListeners();
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event.preventDefault();
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},
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bindMouseListeners() {
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if (!this.mouseMoveListener) {
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this.mouseMoveListener = event => this.onResize(event)
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document.addEventListener('mousemove', this.mouseMoveListener);
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}
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if (!this.mouseUpListener) {
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this.mouseUpListener = event => {
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this.onResizeEnd(event);
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this.unbindMouseListeners();
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}
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document.addEventListener('mouseup', this.mouseUpListener);
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}
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},
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bindTouchListeners() {
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if (!this.touchMoveListener) {
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this.touchMoveListener = event => this.onResize(event.changedTouches[0])
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document.addEventListener('touchmove', this.touchMoveListener);
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}
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if (!this.touchEndListener) {
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this.touchEndListener = event => {
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this.resizeEnd(event);
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this.unbindTouchListeners();
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}
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document.addEventListener('touchend', this.touchEndListener);
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}
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},
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validateResize(newPrevPanelSize, newNextPanelSize) {
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let prevPanelMinSize = ObjectUtils.getVNodeProp(this.panels[0], 'minSize');
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if (this.panels[0].props && prevPanelMinSize && prevPanelMinSize > newPrevPanelSize) {
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return false;
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}
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let newPanelMinSize = ObjectUtils.getVNodeProp(this.panels[1], 'minSize');
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if (this.panels[1].props && newPanelMinSize && newPanelMinSize > newNextPanelSize) {
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return false;
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}
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return true;
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},
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unbindMouseListeners() {
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if (this.mouseMoveListener) {
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document.removeEventListener('mousemove', this.mouseMoveListener);
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this.mouseMoveListener = null;
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}
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if (this.mouseUpListener) {
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document.removeEventListener('mouseup', this.mouseUpListener);
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this.mouseUpListener = null;
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}
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},
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unbindTouchListeners() {
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if (this.touchMoveListener) {
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document.removeEventListener('touchmove', this.touchMoveListener);
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this.touchMoveListener = null;
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}
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if (this.touchEndListener) {
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document.removeEventListener('touchend', this.touchEndListener);
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this.touchEndListener = null;
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}
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},
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clear() {
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this.dragging = false;
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this.size = null;
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this.startPos = null;
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this.prevPanelElement = null;
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this.nextPanelElement = null;
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this.prevPanelSize = null;
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this.nextPanelSize = null;
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this.gutterElement = null;
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this.prevPanelIndex = null;
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},
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isStateful() {
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return this.stateKey != null;
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},
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getStorage() {
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switch(this.stateStorage) {
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case 'local':
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return window.localStorage;
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case 'session':
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return window.sessionStorage;
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default:
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throw new Error(this.stateStorage + ' is not a valid value for the state storage, supported values are "local" and "session".');
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}
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},
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saveState() {
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this.getStorage().setItem(this.stateKey, JSON.stringify(this.panelSizes));
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},
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restoreState() {
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const storage = this.getStorage();
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const stateString = storage.getItem(this.stateKey);
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if (stateString) {
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this.panelSizes = JSON.parse(stateString);
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let children = [...this.$el.children].filter(child => DomHandler.hasClass(child, 'p-splitter-panel'));
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children.forEach((child, i) => {
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child.style.flexBasis = 'calc(' + this.panelSizes[i] + '% - ' + ((this.panels.length - 1) * this.gutterSize) + 'px)';
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});
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return true;
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}
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return false;
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}
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},
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computed: {
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containerClass() {
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return ['p-splitter p-component', 'p-splitter-' + this.layout];
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},
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panels() {
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const panels = [];
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this.$slots.default().forEach(child => {
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if (this.isSplitterPanel(child)) {
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panels.push(child);
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}
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else if (child.children instanceof Array) {
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child.children.forEach(nestedChild => {
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if (this.isSplitterPanel(nestedChild)) {
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panels.push(nestedChild)
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}
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});
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}
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}
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)
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return panels;
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},
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gutterStyle() {
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if (this.horizontal)
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return {width: this.gutterSize + 'px'};
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else
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return {height: this.gutterSize + 'px'};
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},
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horizontal() {
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return this.layout === 'horizontal';
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}
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}
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}
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</script>
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<style>
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.p-splitter {
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display: flex;
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flex-wrap: nowrap;
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}
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.p-splitter-vertical {
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flex-direction: column;
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}
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.p-splitter-panel {
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flex-grow: 1;
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}
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.p-splitter-panel-nested {
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display: flex;
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}
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.p-splitter-panel .p-splitter {
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flex-grow: 1;
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border: 0 none;
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}
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.p-splitter-gutter {
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flex-grow: 0;
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flex-shrink: 0;
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display: flex;
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align-items: center;
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justify-content: center;
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cursor: col-resize;
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}
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.p-splitter-horizontal.p-splitter-resizing {
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cursor: col-resize;
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user-select: none;
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}
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.p-splitter-horizontal > .p-splitter-gutter > .p-splitter-gutter-handle {
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height: 24px;
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width: 100%;
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}
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.p-splitter-horizontal > .p-splitter-gutter {
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cursor: col-resize;
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}
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.p-splitter-vertical.p-splitter-resizing {
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cursor: row-resize;
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user-select: none;
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}
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.p-splitter-vertical > .p-splitter-gutter {
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cursor: row-resize;
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}
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.p-splitter-vertical > .p-splitter-gutter > .p-splitter-gutter-handle {
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width: 24px;
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height: 100%;
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}
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</style>
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